For the avegage rifle and shooter it would depend on the rifle. 308 is a bit more cost and performance effective as a longe range cartidge but that has little to do with the cartidges accuracy. All about the rifle.

Neither round is inherently more accurate than the other, the accuracy depends on the quality of the ammunition, rifle, scope, and the skill of the shooter. With the same quality ammo, in rifles made with the same tolerances, with the same quality scope, and the same shooter, I'm almost certain that the size of the groups would be almost identical, although I think the 30/06 would have better ballistics past about 800 yards due to it being a little faster

Jake hit it on the head, kinda! The advantage of the .30-06 past 400 yards is heavier bullets. They retain more energy. The 100..200fps factor w/ standard 150gr is not a factor. A 165gr .308 and a 180gr .30-06 are very different animals.
Accuracy really comes out when you pass 400 yards as the .308 with a lighter bullet looses velosity faster, thus it drops faster. I believe the accurate range, for snipers is 1000 yards for .308(7.62x51), and 1200 yards for
.30-06(7.62x63). Even if you shoot a 175gr in .308 it still does not match a
.30-06 w/ a 180gr. Basicly a .30-06 always has a 200fps advantage no matter what the bullet weight using the same bullet.

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It would be my thought also that it was the 308. But as has been stated it certainly would depend upon the rifles quality, the ammunition and of course the shooter. I would say the 308 only because of my experience with it using the 168 Gr. Federal Premium GM308M, Lake City Match and other similar ammunition for years. But being open minded about it, I think most think the 308 because most of the precision and tactical rifles are chambered for 308 and not the 30-06. So we get a mind set that the 308 is more accurate. If that is all you have generally used then obviously you think the 308. Obviously the 30-06 has more recoil than the 308 and that could be another factor. But on behalf of the 30-06 it is one fine caliber for all around use and in a good quality rifle is very accurate depending upon the shooter.

03

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